Coal-oil burner.



F. C. DU BOIS.

COAL OIL BURNER.

APPLICATION FILED JULY 3,1916j vF. C. DU BOIS.

COAL 0H. BURNER. APPLlcAnoN msn' JULY 3.1916.

Patented Nov. 20, 19T?.

2 SHEETS-SHEET 2.

FRANCIS C. DU B015, 0F SAN JOSE, CALXFORNI.

collie-on; nennen.

mamie.

Application led July 3, 1916.

To all whom 'it may concern.'

Beit known that l, FnANtis C. DU Bois, a citizen of the United States. residing in the city of San Jose, county of Santa Clara, State of California. have invented a new and useful Improvement'in Coal0il Burners. of which the following is a specication.

My invention relates to Coal oil burners wherein a generator operates in conjunction with a hollow rectangular plate having a baille plate and parallel channels provided with apertures; and the objects of my invention are first. to provide improved means for generating a vapor from coal oil; second.' to provide means for mixing the requisite amount of air with the vapor essential for proper combustion; third, to provide means for regulating the air supply; fourth, to provide means for regulating the supply of oil; lilith. to provide means tor breaking up and mixing the air and vapor; sixth. to provide means for equally distributing the mixed air and vapor through parallel channels and apertures therein; seventl` to provide means for separatinfT the jets of mixed air and vapor emanating from the apertures so as to spread the flame horizontally; and eighth, to provide means for preventing air currents from disturbing the flame.

I accomplish these several ,features byv means of the device disclosed in the draws ings forming a part of the present specification wherein like characters of reference are used to designate lsimilar parts throughout the said specification and drawings, and in Which- Figure 1 ls a plan view of the burner with the upper screen partly broken away disclosing the generator located approximately :in the center thereof, the channel under the generator by means of which the initial heat iS applied thereto, the tube for conducting air into the burner, and the top screen for spreading the flame horizontally.

Fig. 2 is a longitudinally vertical sectional view of the burner disclosing the arcuate screen for breaking up the air and vapor before entrance into the burner, and the arallel rectangular channels Within 'the urners.

Fig. 3 is a bottom view of the top portion of the burner disclosing the barile plate and the parallel channels therein, and 'the bottom of the channel under the generator. i

Fig. e is a, transverse sectional vienv of the Specication of Letters Patent.

Patented Nov. 236), 119117..

serial noflomva burner taken on line X-X of 1., disclosing the relative positions of the genera-- tor, the channel under the generator, the apertures in the parallel channels, and the top and inner screens arranged above and below the apertures.

Fig. 5 is an enlargetgl broken detailed view of the end oit the generator disclosing the comparatively small aperture therein.

Referring to the drawings, the numeral l is used to designatey a easing having; a :entrally disposed outer channel 2 therein and parallel internal channels 3 arranged transverselv7 in respect to the channel Q1, one ot the end channels 3 being son'iewhat wider than the others and having` a longitudinal baille plate l therein.

A tongue 5 is formed integral with one side o? the casing' 1 and is provided with a slot ti .Lrranged to engage and retain the oil supply pipe 7. which terminates in a` needle valve S. A generator 9 is in turn secured to the needle valve 5l and is arranged to lie directly over the centrally disposed channel 2 of the easing 1. The end of the generator 9 is provided with a comparatively small aperture 10. the purpose ot which will hereinafter be more fully set forth. rthe end of the generator 9 having the aperture 10 therein projects slightly into the open end of a return bend 12, the other end of the said return bend 12 being connected to the interior of the casing 1 by means ot a nipple 1+i, so that the said return bend 12 and nipple 14 will conduct a current of air and vapor onto the approximate center or the baille plate e.

The channels are provided with a series o" lugs 15, each having an aperture 16 therein and a second series or" inclined apertures 1T, which are directed onto the genera-tor 9, arranged above the centrally disposed channel 2. A screen 1S is provided Within the casing and under the apertures 16 within the chanv nels 3`tliereoi". "While a second screen il() is arranged directly above the apertures 16 and is retained in position by means of a 22 integral `with the casing l and arranged around 'the enter sides thereot.

The casing 1 is provided with a bottoni. plate 23 and a suitable gasket 25.

The operation is as follows:

lthe channel 2 below the generator il provided with an absorbent non-inflamma- .through the apertures 16 ble material, preferably shredded iasbestos, into which a small part of oil is introduced. The oil is ignited and the heat therefrom heats the generator 9 and vaporizes the coal I oil Within the generator 9 until the expansion due to the evaporation thereof forces the resulting vapor through the aperture 10 of the generator 9 and into the open end of the return bend 12 and against the arcuate screen 27 therein. The force of the injected vapor'will create an inwardlvmovin-g air current through the air tube 28-l and the current of air thus induced will be projected against the arcuate screen 27 and partiall)v broken up.

rI.`he airv and vapor in traversing the curved portion of the return bend 12 will be thoroughly mixed and continue through the nipple 14 into the interior of the casing 1 and against the approximate center of the; baffle plate 4, which will dcfiect the mixture around and into the parallel channels f5 and 17 therein and against the under side ot' the screen 20, which will tend to spread horizontally the mixture emanatin from the apertures 16 and 17, which will be ignited above the screen 20 by means of the initial flame provided by the oil in the asbestos in the Ychaunel 2.

As the vapor is thus ignited, the supply of oil to the generator 9 may be regulated by means of the needle valve 8. Similarly, the

supply. of air through the air tube 28 may be regulated by means of the shutter 32 which is arranged in operative relation to the aperture 33 in the outer end of theI said air tube 28. J

Inasmueh as`the screen 20 is arranged slightlybelow the top of flange 22 of the burner 1, it is evident that any horizon.

tal air currents will be deflected and be prevented from disturbing the flame.

Referring to Fig. 4 of the drawings, it

will be seen that the inclined apertures 1&7 45

from the channel 3 aredireeted onto theI generator 9, so that after the initial charge of oil in the outer channel 2 is consumed, that the generator will continue to be heated by the flame produced above the screen 20 50 and the said apertures 17.

I am aware that the present state of the art discloses burners having generators and means for providing and mixing air with the vapor from the generator, I therefore do not Wish to claim such a combination broadly, but what I do claim as my invention and desire to secure by Letters Patent In a coal oil burner, the combination of a around the upper edges thereof; a generator arranged above the centrally disposed ehauf nel; a return bend secured to the burner casing and arranged to conduct vapor from the generator to the channels within the burner casing; an air tube. arranged to eonduct air into the return bend; an arcuate screen secured Within the return bend and arranged to break up and mix the air and vapor therein; a screen within the burner casing and directly under the apertures in the hannels; a second screen above the apertures; means for regulating the supply of air to theair tube; and-means for regulating the supply of oil to the generator.

In witness whereof I hereunto set my signature. FRANCIS C. DU BOT@ 

